221 BC
"Fusu, promise me that you will fight for the throne! You must save the people of Li! You must also get married!"
There are fusu in the mountains and lotus flowers in the hills. If you don't see Zidu, you will see madness.
In the context of the Qin Empire, Fu Su and He Hua went from being happy enemies to getting married for the sake of their family and country, then building the Great Wall and looking for Penglai. Feelings arise in hardships, and they will last the rest of your life.
Intention: I want to show how the emotions of historical figures promote historical development.